Time and energy budgets of alfalfa pollinating beesMegachile nana bingh andMegachile flavipes Spinola (Hymenoptera: Megachilidae)

Abrol D P 1986 Metabolic expenditures ofMegachile nana Bingh andM. flavipes Spinola (Hymenoptera: Megachilidae) as determined by rate of oxygen consumption;J. Anim. Morphol. Physiol. 33 (in press)

Gill F B and Wolf L L 1975 Economics of feeding territoriality in the golden winged Sunbird;Ecology 56 333–345

Heinrich B 1975 Energetics of pollination;Annu. Rev. Ecol. Syst. 6 137–171

Heinrich B 1983 Insect foraging energetics; inHandbook of Experimental Pollination Biology (ed) C E Jones and R J Little (New York: Scientific and Academic Press) p 187

Heinrich B and Raven P H 1972 Energetics and pollination:Science 176 597–602

Jain K L and Kapil R P 1980 Foraging rhythm of Megachilid bees in relation to the flowering ofMedicago sativa L. andParkinsonia aculeata L.:Indian Bee J. 42 35–38

Leppik E E 1977Floral evolution in relation to pollination ecology (New Delhi: Today and Tomorrow's printers and publishers) 104–108

Linsley E G, Macswain J W and Ray F S 1952 Outlines for ecological life histories of solitary and semisocial bees;Ecology 33 558–567

Pyke G H 1979 The economics of territory size and time budget in the golden winged Sunbird;Am. Nat. 114 131–145

Rowley F A 1976 The sugars of some Philippine nectars;J. Apic. Res. 15 19–22

Stiles F G 1971 Time, energy and territoriality of the Anna humming bird (Calypte anna);Science 173 818–821

Wolf L L and Hainsworth F R 1971 Time and energy budgets of territorial humming bird;Ecology 52 980–988